Pub Date : 2022-08-26DOI: 10.11598/btb.2022.29.2.1637
Muhammad Zulhariadi, Raden Dedi Irawan, Aulia Zulfaeda, Nurul Hidayani, Frendi Irawan
West Lombok District is the second largest district in Lombok Islands. The diversity of dragonflies (Order Odonata) as a bioindicator of environmental quality has not been widely studied in the West Lombok region. This study aimed to determine the species diversity of dragonflies (Order Odonata) found in Batubolong River, West Lombok District and its relation to the occurring land cover changes. This study was carried out by using a descriptive explorative method, where the sampling technique was done by means of line transects. Maps of study and sampling locations as well as land cover changes were made using ArcGIS 10.4.1 software based on primary and secondary data. The results showed that there were 11 species of dragonflies with a Shannon-Wiener diversity index value (H') of 2.212 (medium diversity), a population density index (C) of 0.126 (low dominance), and a species evenness index (E) of 0.923 (high uniformity). Our study also found two rare species of dragonfly in Lombok Island i.e., 3 individuals of Nososticta emphyla (Lieftinck, 1936) with 9% relative abundance and 1 individual of Drepanosticta berlandi (Lieftinck, 1939) with 3% relative abundance. The discovery of D. berlandi in Lombok is the third time after the findings in 1896 and the 19 th century. Analysis of satellite data around the sampling area within the period 2013-2020 showed that there has been an increase in land cover of 6,149.29 m 2 . The increase in land cover changes may have caused the disappearance of several Odonata species in the sampling location.
{"title":"DRAGONFLIES DIVERSITY AND LAND COVER CHANGES IN THE BATUBOLONG RIVER, WEST LOMBOK DISTRICT","authors":"Muhammad Zulhariadi, Raden Dedi Irawan, Aulia Zulfaeda, Nurul Hidayani, Frendi Irawan","doi":"10.11598/btb.2022.29.2.1637","DOIUrl":"https://doi.org/10.11598/btb.2022.29.2.1637","url":null,"abstract":"West Lombok District is the second largest district in Lombok Islands. The diversity of dragonflies (Order Odonata) as a bioindicator of environmental quality has not been widely studied in the West Lombok region. This study aimed to determine the species diversity of dragonflies (Order Odonata) found in Batubolong River, West Lombok District and its relation to the occurring land cover changes. This study was carried out by using a descriptive explorative method, where the sampling technique was done by means of line transects. Maps of study and sampling locations as well as land cover changes were made using ArcGIS 10.4.1 software based on primary and secondary data. The results showed that there were 11 species of dragonflies with a Shannon-Wiener diversity index value (H') of 2.212 (medium diversity), a population density index (C) of 0.126 (low dominance), and a species evenness index (E) of 0.923 (high uniformity). Our study also found two rare species of dragonfly in Lombok Island i.e., 3 individuals of Nososticta emphyla (Lieftinck, 1936) with 9% relative abundance and 1 individual of Drepanosticta berlandi (Lieftinck, 1939) with 3% relative abundance. The discovery of D. berlandi in Lombok is the third time after the findings in 1896 and the 19 th century. Analysis of satellite data around the sampling area within the period 2013-2020 showed that there has been an increase in land cover of 6,149.29 m 2 . The increase in land cover changes may have caused the disappearance of several Odonata species in the sampling location.","PeriodicalId":38783,"journal":{"name":"Biotropia","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75611559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-08-26DOI: 10.11598/btb.2022.29.2.1709
Adi Nugroho, D. Susanto, S. Subrata
Noninvasive genetic sampling is the most reliable approach to collect endangered species which are typically rare and elusive. However, the approach is hampered by poor quality and quantity of DNA amount, and therefore, a pilot study is required. Our current short communication article reports the first noninvasive genetic sampling approach using feces of critically endangered Bawean deer ( Axis kuhlii ) to test the effect of aging on the amount of DNA extraction. Fecal samples of the Bawean deer were collected from the Bawean Deer Captive Unit in Sangkapura Village, Bawean Island, East Java. The samples were grouped into two different categories, namely: 1) New samples: for feces that had just been expelled for less than a day and 2) Old samples: for feces that were estimated to have been expelled for more than a day. There were 11 New samples and 16 Old samples. The samples were extracted using the QIAGEN Mini Stool Kit. The DNA quantification was carried out by using a fluorometer. The results of the extraction between the two categories were analyzed by the Kruskal Wallis test. The results showed that the mean rank value of the New samples was better (15.27) than the Old samples (13.13). The P value of the Kruskal Wallis test, however, was higher than the Asymp significant value, indicating that there was no meaningful differences (P = 0.49) between the two samples categories. The work described in this short communication article is a preliminary result and an important step in the study of Bawean deer population genetic.
{"title":"AGEING AND THE AMOUNT OF DNA EXTRACTED FROM BAWEAN DEER (Axis kuhlii) FECES","authors":"Adi Nugroho, D. Susanto, S. Subrata","doi":"10.11598/btb.2022.29.2.1709","DOIUrl":"https://doi.org/10.11598/btb.2022.29.2.1709","url":null,"abstract":"Noninvasive genetic sampling is the most reliable approach to collect endangered species which are typically rare and elusive. However, the approach is hampered by poor quality and quantity of DNA amount, and therefore, a pilot study is required. Our current short communication article reports the first noninvasive genetic sampling approach using feces of critically endangered Bawean deer ( Axis kuhlii ) to test the effect of aging on the amount of DNA extraction. Fecal samples of the Bawean deer were collected from the Bawean Deer Captive Unit in Sangkapura Village, Bawean Island, East Java. The samples were grouped into two different categories, namely: 1) New samples: for feces that had just been expelled for less than a day and 2) Old samples: for feces that were estimated to have been expelled for more than a day. There were 11 New samples and 16 Old samples. The samples were extracted using the QIAGEN Mini Stool Kit. The DNA quantification was carried out by using a fluorometer. The results of the extraction between the two categories were analyzed by the Kruskal Wallis test. The results showed that the mean rank value of the New samples was better (15.27) than the Old samples (13.13). The P value of the Kruskal Wallis test, however, was higher than the Asymp significant value, indicating that there was no meaningful differences (P = 0.49) between the two samples categories. The work described in this short communication article is a preliminary result and an important step in the study of Bawean deer population genetic.","PeriodicalId":38783,"journal":{"name":"Biotropia","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90527930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-08-26DOI: 10.11598/btb.2022.29.2.1687
Eka Arismayanti, J. Waterman, Andre Pasetha, Indira Nurul, Qomariah, D. Perwitasari-Farajallah, D. Astuti
Pregnancy and lactation are reproductive phases that require large amounts of energy. Females in the reproductive period need good quality and quantity of food to provide nutrition for the fetus, milk production and child care. The mother will adapt to changes in behavior patterns and food type to meet these needs. The influence of parity and environmental conditions can affect the behavior patterns of females. During pregnancy, the Macaca nigra is known to have different proportion of activities in each period, while the behavior during the lactation phase in each mester is unknown. Therefore, this study aimed to analyze the behavior patterns in each mester and the food selection of Macaca nigra during the pregnancy and lactation phases, as well as the influence of female parity and environmental toward the behavior patterns. There were 39 females Macaca nigra observed from two groups from August 2018 to July 2019. An instantaneous focal sampling method was performed to observe females’ daily activities, continuous focal sampling to monitor food types and a selectivity index to analyze food type preferences. The results showed that the female Macaca nigra pattern was influenced by the reproductive phase, female parity and environmental conditions. Females at the end of the pregnancy and lactation phases had a high proportion of feeding and eat more arthropods. Primiparous females mostly performed resting activities. Food preference was influenced by reproductive factors and food availability. The choice of fruit could be affected by fruit availability, and their favorite food was D. mangiferum and Euginia sp.
{"title":"PREGNANT AND LACTATING Macaca nigra: BEHAVIOR AND FOOD SELECTION","authors":"Eka Arismayanti, J. Waterman, Andre Pasetha, Indira Nurul, Qomariah, D. Perwitasari-Farajallah, D. Astuti","doi":"10.11598/btb.2022.29.2.1687","DOIUrl":"https://doi.org/10.11598/btb.2022.29.2.1687","url":null,"abstract":"Pregnancy and lactation are reproductive phases that require large amounts of energy. Females in the reproductive period need good quality and quantity of food to provide nutrition for the fetus, milk production and child care. The mother will adapt to changes in behavior patterns and food type to meet these needs. The influence of parity and environmental conditions can affect the behavior patterns of females. During pregnancy, the Macaca nigra is known to have different proportion of activities in each period, while the behavior during the lactation phase in each mester is unknown. Therefore, this study aimed to analyze the behavior patterns in each mester and the food selection of Macaca nigra during the pregnancy and lactation phases, as well as the influence of female parity and environmental toward the behavior patterns. There were 39 females Macaca nigra observed from two groups from August 2018 to July 2019. An instantaneous focal sampling method was performed to observe females’ daily activities, continuous focal sampling to monitor food types and a selectivity index to analyze food type preferences. The results showed that the female Macaca nigra pattern was influenced by the reproductive phase, female parity and environmental conditions. Females at the end of the pregnancy and lactation phases had a high proportion of feeding and eat more arthropods. Primiparous females mostly performed resting activities. Food preference was influenced by reproductive factors and food availability. The choice of fruit could be affected by fruit availability, and their favorite food was D. mangiferum and Euginia sp.","PeriodicalId":38783,"journal":{"name":"Biotropia","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85600965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-08-26DOI: 10.11598/btb.2022.29.2.1634
{"title":"MERCURY CHLORIDE (HgCl2) EXPOSURE CHANGES THE HISTOPATHOLOGICAL FIGURE OF EYE AND BRAIN OF TILAPIA FISH (Oreochromis mossambicus)","authors":"","doi":"10.11598/btb.2022.29.2.1634","DOIUrl":"https://doi.org/10.11598/btb.2022.29.2.1634","url":null,"abstract":"","PeriodicalId":38783,"journal":{"name":"Biotropia","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84549271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-08-26DOI: 10.11598/btb.2022.29.2.1703
Tjahjo Winanto, Petrus Hary Tjahja, Taufan Harisan
Benthic foraminifera are types of organisms that are sensitive to environmental changes, so they are often used as a bioindicator for aquatic environmental conditions. The purpose of this study was to determine the community structure of benthic foraminifera community, sediment types and the relationship between the abundance of foraminifera with the sediment types in the eastern waters of Segara Anakan Lagoon in Cilacap. Method used in this study was a survey method. Samples were taken by using random sampling method. The study was conducted at 5 stations with 3 repetitions. Laboratory observations carried out included the types and numbers of benthic foraminifera. Community structure of foraminifera among stations were analyzed using one-way ANOVA, while the relationship between community structures and water quality parameters was analyzed using Pearson correlation. The results showed that in the the eastern waters of Segara Anakan Lagoon there were 58 species of foraminifera which abundance ranged from 532 ind/m 2 to 927 ind/m 2 . The diversity index of foraminifera was in the medium to high diversity categories. The uniformity index of foraminifera was in the high uniformity in a stable community. The dominance index of foraminifera was in the low category. The sediment types was fine sand, medium sand and coarse sand. The relationship between the abundance of foraminifera with the sediment types was strong with high R values (0.763-0.809).
{"title":"COMMUNITY STRUCTURE OF BENTHIC FORAMINIFERA IN EASTERN WATERS OF SEGARA ANAK LAGOON IN CILACAP","authors":"Tjahjo Winanto, Petrus Hary Tjahja, Taufan Harisan","doi":"10.11598/btb.2022.29.2.1703","DOIUrl":"https://doi.org/10.11598/btb.2022.29.2.1703","url":null,"abstract":"Benthic foraminifera are types of organisms that are sensitive to environmental changes, so they are often used as a bioindicator for aquatic environmental conditions. The purpose of this study was to determine the community structure of benthic foraminifera community, sediment types and the relationship between the abundance of foraminifera with the sediment types in the eastern waters of Segara Anakan Lagoon in Cilacap. Method used in this study was a survey method. Samples were taken by using random sampling method. The study was conducted at 5 stations with 3 repetitions. Laboratory observations carried out included the types and numbers of benthic foraminifera. Community structure of foraminifera among stations were analyzed using one-way ANOVA, while the relationship between community structures and water quality parameters was analyzed using Pearson correlation. The results showed that in the the eastern waters of Segara Anakan Lagoon there were 58 species of foraminifera which abundance ranged from 532 ind/m 2 to 927 ind/m 2 . The diversity index of foraminifera was in the medium to high diversity categories. The uniformity index of foraminifera was in the high uniformity in a stable community. The dominance index of foraminifera was in the low category. The sediment types was fine sand, medium sand and coarse sand. The relationship between the abundance of foraminifera with the sediment types was strong with high R values (0.763-0.809).","PeriodicalId":38783,"journal":{"name":"Biotropia","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90570787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-04-24DOI: 10.11598/btb.2022.29.1.1615
M. Rahayuningsih, Yanuar Revandi, Harnina Bintari
Wreathed Hornbill (Rhyticeros zlndulates) is known to build nests in three cavities where they managed to live and breed. This edifice is predicted to contain various molds needed to maintain micro-environmental steadiness. This study was aimed to identify molds diversity in the Wreathed Hornbill's nest, using samples collected from empty structure with no bird activity. The samples were obtained from the IWsidi and Nglimut observation stations on two occasions, i.e., in 2016 and 2017. Furthermore, the samples comprised cover soil, wood and inner material, which were collected aseptically and placed in sterile ziplock plastic bags. These samples were then diluted in sterilized distilled water to attain 10-3 mg/mL, and subsequently inoculated on Potato Dextrose Agar (PDA), Malt Extract Agar (MEA) and Czapek Dox Agar (CDA). The inoculants were incubated at 37 OC, followed by the observation of mold colony after the 11 th day. The results identified seven and nine species of molds in the Icalisidi and Nglimut observation stations, respectively. The most abundant species was Penin'llizlm sp. which was found in composted nest materials for the whole observation periods.
{"title":"MOLD DIVERSITY OF WREATHED HORNBILL (Rhyticeros undulatus) NEST IN MOUNT UNGARAN","authors":"M. Rahayuningsih, Yanuar Revandi, Harnina Bintari","doi":"10.11598/btb.2022.29.1.1615","DOIUrl":"https://doi.org/10.11598/btb.2022.29.1.1615","url":null,"abstract":"Wreathed Hornbill (Rhyticeros zlndulates) is known to build nests in three cavities where they managed to live and breed. This edifice is predicted to contain various molds needed to maintain micro-environmental steadiness. This study was aimed to identify molds diversity in the Wreathed Hornbill's nest, using samples collected from empty structure with no bird activity. The samples were obtained from the IWsidi and Nglimut observation stations on two occasions, i.e., in 2016 and 2017. Furthermore, the samples comprised cover soil, wood and inner material, which were collected aseptically and placed in sterile ziplock plastic bags. These samples were then diluted in sterilized distilled water to attain 10-3 mg/mL, and subsequently inoculated on Potato Dextrose Agar (PDA), Malt Extract Agar (MEA) and Czapek Dox Agar (CDA). The inoculants were incubated at 37 OC, followed by the observation of mold colony after the 11 th day. The results identified seven and nine species of molds in the Icalisidi and Nglimut observation stations, respectively. The most abundant species was Penin'llizlm sp. which was found in composted nest materials for the whole observation periods.","PeriodicalId":38783,"journal":{"name":"Biotropia","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85670879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-04-24DOI: 10.11598/btb.2022.29.1.834
Juli Meliai, A. Amrozi, M. Agil, I. Supriatna
This study aimed to find out the characteristics of Gayo horses and to identify the population of Gayo horses. Data collection was conducted through a selection process from more than 100 local horses distributed in Central Aceh Subdistricts. Gavo Lues and Bener Meriah. The selection Drocess resulted in 30 Gavo horses having. , , " varying ages. Detail observation was performed on six Gayo horses consisting of 3 male horses and 3 female horses. The observation comprised morphological observation and morphometry. Data collection of Gayo horse population was based on the annual report from the local Animal Husbandry and Fishery Office of Central Aceh Subdistrict over the last 5 vears. Results of this studv showed that Gavo horses have a straight cranial s h a ~ e with 0 smaller size, thick and stiff mane, and ears akin to donkey's ears. The study also showed that Gayo horse's body height ranged between 113-120 cm with a body weight range of 215-280 kg. Gayo horse is agile despite living in mountainous areas and able to carry heavy loads. The population of Gayo horses have been declining since 2010-2014. Gayo horse is included in a large pony category. Conservation efforts are essential to save Gayo horse from extinction.
{"title":"BIOLOGICAL CHARACTERISTICS OF INDONESIAN GAYO HORSE","authors":"Juli Meliai, A. Amrozi, M. Agil, I. Supriatna","doi":"10.11598/btb.2022.29.1.834","DOIUrl":"https://doi.org/10.11598/btb.2022.29.1.834","url":null,"abstract":"This study aimed to find out the characteristics of Gayo horses and to identify the population of Gayo horses. Data collection was conducted through a selection process from more than 100 local horses distributed in Central Aceh Subdistricts. Gavo Lues and Bener Meriah. The selection Drocess resulted in 30 Gavo horses having. , , \" varying ages. Detail observation was performed on six Gayo horses consisting of 3 male horses and 3 female horses. The observation comprised morphological observation and morphometry. Data collection of Gayo horse population was based on the annual report from the local Animal Husbandry and Fishery Office of Central Aceh Subdistrict over the last 5 vears. Results of this studv showed that Gavo horses have a straight cranial s h a ~ e with 0 smaller size, thick and stiff mane, and ears akin to donkey's ears. The study also showed that Gayo horse's body height ranged between 113-120 cm with a body weight range of 215-280 kg. Gayo horse is agile despite living in mountainous areas and able to carry heavy loads. The population of Gayo horses have been declining since 2010-2014. Gayo horse is included in a large pony category. Conservation efforts are essential to save Gayo horse from extinction.","PeriodicalId":38783,"journal":{"name":"Biotropia","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83863752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-04-24DOI: 10.11598/btb.2022.29.1.1627
{"title":"LITTERFALL, LITTER DECOMPOSITION AND NUTRIENT RETURN OF REHABILITATED MINING AREAS AND NATURAL FOREST IN PHANGNGA FORESTRY RESEARCH STATION, SOUTHERN THAILAND","authors":"","doi":"10.11598/btb.2022.29.1.1627","DOIUrl":"https://doi.org/10.11598/btb.2022.29.1.1627","url":null,"abstract":"","PeriodicalId":38783,"journal":{"name":"Biotropia","volume":"80 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76092475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-04-24DOI: 10.11598/btb.2022.29.1.1443
{"title":"HEAVY METALS CONTAMINATION AND WATER QUALITY PARAMETER CONDITIONS IN JATILUHUR RESERVOIR, WEST JAVA, INDONESIA","authors":"","doi":"10.11598/btb.2022.29.1.1443","DOIUrl":"https://doi.org/10.11598/btb.2022.29.1.1443","url":null,"abstract":"","PeriodicalId":38783,"journal":{"name":"Biotropia","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84818247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lakes and waterfalls are freshwater ecosystems having important roles in ecology, tourism and economic aspects. Among living organisms existing in lakes and waterfalls is neuston. Neuston lives on the surface and below the surface of the waters. Neuston can be used as a bioindicator for water quality due to the neuston's high level of sensitivity toward pollutants. The purpose of this study was to determine the density and diversity of neuston as a bioindicator for water quality in the lake and waterfall. The methods used were survey and observation. The study was carried out by using purposive sampling at two locations, namely the lake and waterfall of Situ Gunung, Sukabumi, with a sampling area of 1 x 1 m2. The samples obtained were put into bottles containing 70% alcohol to be identified in the laboratory. Environmental parameters measured were air and water temperature, water pH, water depth, turbidity, water flow velocity, dissolved oxygen, substrate and weather conditions. The results obtained indicated that the lake and waterfall of Situ Gunung, Sukabumi had highest neuston densities were shown by Gerrir bcustris and Dineutus assirnilis. The lowest neuston densities were shown by Metrobates hesperius, Gemis cornatus, Aquarius remigs and Trepobates pictzls. This study showed that the environmental parameters of the lake and waterfall of Situ Gunung, Sukabumi can still support the survival of the existing neustons.
湖泊和瀑布是淡水生态系统，在生态、旅游和经济等方面具有重要作用。生活在湖泊和瀑布里的生物中有一种叫纽斯顿。纽斯顿生活在水面和水面以下。由于Neuston对污染物的高度敏感性，因此可以用作水质的生物指示剂。本研究的目的是确定水蚤的密度和多样性，作为湖泊和瀑布水质的生物指标。采用调查法和观察法。该研究在两个地点进行了有目的的采样，即苏卡umi的Situ Gunung的湖泊和瀑布，采样面积为1 x 1 m2。将获得的样品装入含70%酒精的瓶子中，在实验室进行鉴定。测量的环境参数包括空气和水温、水的pH值、水深、浊度、水流速度、溶解氧、基质和天气条件。结果表明，苏加武米斯图古农湖和瀑布的昆虫密度最高，主要以布氏格里乌斯和阿斯尼迪乌斯为主。中子密度最低的是双星(Metrobates hesperius)、双子座(Gemis cornatus)、宝瓶座(Aquarius remigs)和三角星(Trepobates pictzls)。本研究表明，素kabumi的司徒古农湖和瀑布的环境参数仍然可以支持现有中子的生存。
{"title":"NEUSTON DIVERSITY AND DENSITY AS BIOINDICATOR FOR WATER QUALITY","authors":"Imam Safir Alwan Nurza, Jesslyn Vania, Muhammad Khatami Reynaldi, Zaiu Gunawan Rasyid","doi":"10.11598/btb.2022.29.1.1662","DOIUrl":"https://doi.org/10.11598/btb.2022.29.1.1662","url":null,"abstract":"Lakes and waterfalls are freshwater ecosystems having important roles in ecology, tourism and economic aspects. Among living organisms existing in lakes and waterfalls is neuston. Neuston lives on the surface and below the surface of the waters. Neuston can be used as a bioindicator for water quality due to the neuston's high level of sensitivity toward pollutants. The purpose of this study was to determine the density and diversity of neuston as a bioindicator for water quality in the lake and waterfall. The methods used were survey and observation. The study was carried out by using purposive sampling at two locations, namely the lake and waterfall of Situ Gunung, Sukabumi, with a sampling area of 1 x 1 m2. The samples obtained were put into bottles containing 70% alcohol to be identified in the laboratory. Environmental parameters measured were air and water temperature, water pH, water depth, turbidity, water flow velocity, dissolved oxygen, substrate and weather conditions. The results obtained indicated that the lake and waterfall of Situ Gunung, Sukabumi had highest neuston densities were shown by Gerrir bcustris and Dineutus assirnilis. The lowest neuston densities were shown by Metrobates hesperius, Gemis cornatus, Aquarius remigs and Trepobates pictzls. This study showed that the environmental parameters of the lake and waterfall of Situ Gunung, Sukabumi can still support the survival of the existing neustons.","PeriodicalId":38783,"journal":{"name":"Biotropia","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90514692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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